Spec: 1.Wireless Transmitting Distance : 30m; 2.Transmission frequency 85.2?.2MH; 3.Receiving Frequency Range : 84.5-106.5MHz Main Function: 1.Wireless Listening Function; 2.FM Radio; 3.Wireless talking on internet; 4.Fashionable Colorful Case. Packing: 1pc/color box; 40pcs/carton; Carton Size: 75.5*32*42cm N.W./G.W.: 10.16/11.18 kg